Radio vision studio equipment



(I. F. JENKINS RADIO VISION STUDIO EQUIPMENT Sept, 18 1928,

Filed March 14, 1925 WITNESS Patented Sept. 18, 1928.

' UNITED STATES PATENT OFFICE.

CHARLES FRANCIS JENKINS, OF WASHINGTON, DISTRICT OF COLUMBIA.

RADIO VISION STUDIO EQUIPMENT,

Application filed March 14, 1925; Serial No. 15,585.

tried has required a new machine for each new size of picture to be sent by electricity. The method herein disclosed permits of the use of the same translating mechanism in the transmitting equipment, the images of various objects to be broadcast being all reduced to the same size image for purposes of broadcasting.

With this and other objects in view the invention consists in the novel assembly of the various devices employed, hereinafter disclosed, illustrated in the drawings, and particularly pointed out in the claim.

In the drawings Fig. 1 and Fig. 2 represent the same arrangement of elements, with Fig. 1 containing a close-by object, and Fig.

2 a distant object.

In the figures, A is the object to be transmitted by radio: B an objective 'lens. for imaging the object onto a ground glass screen C; Da rotating lens disc (the'moving element of Patent 7 No. 1,521.191) which sweeps the second image, namely, the image of the image (the second image) across the light cell E.

With the mechanism of the radio picture transmitter made to transmit from a single given size of picture, it is obvious that the lens B must be moved to difl'erent positions to focusdiiferent sized objects, and near and .far objects, all onto one size of screen. 4 It is also obvious to those skilled in optics that the screen 0 can, be removed and the lens-prism elements of D will still continue to focus the image of the image (the second image) onto the light cell. The mechanism 4 will continue to broadcast the whole scene because the boundary of the image C in the. focal plane of lens B remains the same whether there is a plate upon which the image appears, or whether it is but an aerial image.

What I claim is "In' a picture transmission system, a lens for forming a stationary image of the subject whose image is to be transmitted, a light-sensitive cell, and a rotating carrier provided with lenses arranged to cause a succession of images of said stationary image to traverse the lightsensitive cell by adjacent parallel paths.

In testimony whereof I have aflixed my signature.

CHARLES FRANCIS JENKINS. 

